Controller



IN VEN TOR.

@Hrm/fr C. Fl MILLER Sept. 30, 1952 CONTROLLER 3 Sheets-Sheet 2 OriginalFiled Feb. 28, 1948 w25-m M f @Afro/wip( FIGS.

Sept. 30, 1952 c. F. MILLER Re 23,554

CONTROLLER Original Filed Feb. 28, 1948 3 Sheets-Sheet 3 F|G.5. l

i JNVENToR. /dua ff//w BY lhave beenv recogniaed.

Reissued Sept. 30, 1951"?A CONTROLLER Charles F. Miller, Philadelphia,Pa., assigner to Jacquard KnittingMachine Co., Inc., Philadelphia, Pa.,a corporation of New York riginal No. 2,534,724, dated December 19,1950,

Serial No. 11,969, February 28, 1948. Application for reissue April 4,1952, Serial No. 280,560

y `9 Claims.

a Matter enclosed in heavy brackets appears in the original patent butforms no reissue specification; matter printed in italics indicates theadditions made by reissue.

This invention relates to controllers employed to start, stop or modifyindustrial operations at intervals, and generally in a repetitivemanner.

- For example, in certain circular knitting maticular length of cloth,it is necessary to repeat the series of operational changes, whateverthey may comprise. The present invention relates to controllers of thetype that are adapted to bring about operational changes which, asin thecase of those mentioned, need to be brought about at intervals ofgreater or lesser duration. It is not limited to the operationsmentioned above however, and while it is particularly well suited to thecontrol of circular knitting machines, `it is not wholly limitedthereto. Instead, speaking broadly, the invention is of generalapplication to controllers of the type indicated as will become apparentfrom the matter hereafter.

As is Well known, controllers of the type indicated have one or morepatterns to directly direct the desired changes. Whatever this patternarrangement may be however, such a controller commonly employs inaddition a master control device or mechanism having its own pattern toadvance the change-directing pattern or patterns whenever a change is tobe made in one or more of the operations. Speaking generally, the use ofa master control device or mechanism to call the change-directingpattern or patterns intoaction only when the need for their actionarises, permits the change-directing pattern or patterns to be shorterand the whole mechanism more compact than it would be otherwise.

With such arrangements the master control device or mechanism, or somepart of it, is driven continually in a'xed time relation to theoperation or operations to be controlled, so that the various changesmay occur at the proper times relative to those operations. Customarilyat least, the master control mechanism or the part of it that is tooperate continually, is drivenfrom the power shaft of the machine towhich the controller is applied. As commonly built heretofore howeverthe master control device includes (i. e. incorporates or has associatedwith it) a pawl and ratchet.` This has two faults that long First,whenever the partvof `vnin a ratchet is advanced by the pawl themomentum of the parts may cause the change-directing pattern cr patternsto advance beyond their intended new positions, thereby causingimperfect operation. Second, the ratchet is free to beturnedvaccidentally, or manually by someone unfamiliarwith the effect ofthe action, and thereby changes made in the operations at impropertimes;v u Speaking generally the present invention eliminates suchfaults by locking the mastercontrol mechanism and all its parts to theshaftfor other powder device by which the controller mechanism isdriven, except possibly when the master control or some part of it isdeliberately unlocked from the driving mechanism or from an associatedpart by means of attachments provided for that purpose. Such attachmentsvmay be provided to permit the various parts o'fj'the controller and itspatterns to be brought initially into the desired time relations.

Primarily this result is accomplished by eliminating all pawls andratchets and employing instead, at the master control mechanism,`constantly intermeshed toothed gearing, and preferably similarlyconnecting the change-directing pattern or patterns to the shaft orotherv power device which provides the power to advance it or them. Thelatter connectionmay be ,a Geneva type of movement, and where thepattern of the master control mechanism is to be advancedintermittently, the toothed gearing which connects it to its drivingshaft canbe a Geneva type of movement also. Where it is desired that thepattern of. the master control mechanism be advanced quite slowlyrelative to the driving shaft, e. g. where it is desired that theintervals between its successive advances be rather long, a successionof gears, preferably a plurality 'of Geneva movements, can be interposedbetween the driving shaft and this pattern,y the first being drivendirectly by, say, the driving shaft and the last advancing the pattern.Also where'a complete cycle of the controlled operations comprises, ormay require, complete cycles 5 of a number of operations (as, forexample, in the case of a Acircular knitting machine having 'a number offeeds, Where a completev rotation of the cam cylinder can be regarded asal completev e like teeth, and is positioned next to I3 so thatlthelconcaveend of eachioifzitsteeth 2l can engage and loci:` with thecollar`A I Il" of gear B when the sleeve 6 is slid to the left on shaftI (Fig. 9) and be turned by the single tooth 9 on the gear 8 when thesleeve 6 is slid to the ight (Fig. 8). Additionally carried on the hubFig. 2 is an isometric projection of `/tl 1e" s ax'rier e in itshousing. Fig. 3 shows the `A`controllerhousing broken away atjthe mastercontrol` mechanism and the Genevafwheels `removed from their hub andturnedoutwardly. Fig. 1,4 is a side elevation of the controller withapart of the housing broken away. Fig. 5 isan end "is an exploded Viewshowing.k thev Atwo Geneva Wheels as viewed from"their"`inner`"sides andwith the follower armthat is actuated by one rthemqadvance. tlilmaster@mm1 .Pattern .,efend'oreacn. .meer@cylebfihefkniftig Fig.' '1 iis'see'l orfjshowiiig 'one or the 'r'tinis patterns and its dessein-,ed

ngg'earin' position `for turri'ingboth of Vthe ..9S1i'bntl10l'Gnll'whfve1s-pg- .9 is Elfde* tail' showing the same gear in' positionforv turnins only the 'me master @new Gehe-va weee locking .oilr thevouter or' "second masterk v'con- 't enevawheelagainst turning the master'sprocket wheel. Y @umg ,tof the 'drawmgsil he .Sh-Saft.. l Cf. the v9;50'nijroller, driven continuously from thcjniain lift 0f I ,theknitting j machine. not `.liwnl 'ttroush gears;2.115.,summed-1n'bearings a 'in "b eketslfrine'ctd t thehousiig L5 0f.the controller. Since this controllerisvdesigned for slijt-:I'eedknitting machinewlerein allchanges inbp'eration 'are to be madeat` one,and the same place withrespectfto theneedle cylinder, efsh'ait i[isissuned 'to rotatepiice foreach ''iass ,fiel-eed vr thatplace.. Af-fixedte Shaft "yaf'keyj-sq that itwiu 'be turned with the f atj the sainetimefbe slidable' axially th le'ori, i s the lv sleeifefli whichytowardits left d nd. "1111s th'm, l .having Pointed end Figre fundamenta#sieht han@ en@ has ge a, .navidad-.wandte ,singlegearlioomp 2 f'cynndriel qr'tiorizthap 'mayfbeormed collar IIJ, "Excepti'orlltheprojecting tooth nd thefriec'ssary'slotsgat its two sides, ,the8 is"cylindricaland'of the same diameter 1lb` lf2 1in, ULS lOSlY-Cled"he. .dln fer' or inner Geneva "wheel I3" so positioned i1-.can be turned'by me 'toom 9j n the g'ear`j8jas thetooth `engagesYs ucessively in each[oft es'lots I4 between the teeth I5 of the wheel. 'rh 'conectas-armeends orme teeth were thanpthy .lock 'wcm- Opihe inner, ific@ot'theGeneva Wheel I3 is acircular channel or "rdve ll1 fvrovided...with.. a' 'number 0f tri portions I3.' in thepresent instance three.eduil"fangbiillrly spaced,` and correspondingly, 'since the liiitting'machine for which this controller was 'iisigd is;l ajsixefeed jiachine.jrhey when Vla as eignteeiitjeetn lsjir'igjsrw'rhe groove .l1 ybepovidedby concentric applied rings I6. 'carried ontliehuliv I2btjastened there- I`"to ,"as fmb'y"screws I9@ isthe drivable member.' or"itcieneva 4wheel zu. This has thesamepiagn eter as Geneva Wheel I3, andthe same number of nism.v Fig. v8 fis; a; detail '"sho'wing theisicrfledahub 1,2 rotatable thereon. on l vmounted on the sprocket" '22.

Vmounted in the beam' @Il "and,confill'ected"4 I2 is the ,sprocket 22which is furnished, off its thesprocket 22 to the hub in whateverangular position'the desired timing may require. The 29 and the shaft'rotatably mountedfin thewallf; A

coverfplate 34" covers" the Geneva wheels 'Ifaiiddirecting'patternsjinto actionjjat the d" `f;-

times'as will be 'understood' constitutethepa "tern of themaster'control mechanism; "It'f'is the kslotted link `42 which turnsanche pivqtiiin theV left. Similarly, the upper end or: -the {'pfin (i4is engageable by the left/hand side' ofthe Iit Acan be vengagedjbythecam 1.

. InV brief. the Gehetai wheels 1li: eintnstitute successive 'gears fordriving the'fmastr control pattern 35 from the mainfshaft ord-the oncein a complete cycle o f vthelrni-ttiri`g machine `l(i.` e. the passageofjsi'xieeds overa given-point),

rserve to time the advances of theY masterlcontol mechanism pattern"with irespect to l complete Cyle. I,

The -mechanis'm directly connectingV th'e mas- I ter chain 35' tothevcarriers 'of 'the afngef'dlicting patterns andfbyineans of whichlthefmaster control mechanism. )acting A through the 'master chainY 315,bringsn those patterns into'and t les them out ,Qf Operation, iS as'ffllOWSJA .1. ler arm, turning on pivot 46 secured' to the' holis-`follower` roller III` vwhich constitutes itsjfeeler, 11131511 themaster control chain '35v (Figs 2' d'5). vThe@lorraineend foftlieiiel'ea'r) Y, tothe upper en d of a verticaljlink' 49 vwhich; in

beam 48. This lever I turns on pivot pin 52 secured to the beam 40, andits left hand end, as viewed in Fig. 4, is shaped so as to form abracket 53 extending under the beam 48. Connected to the bracket 53, andextending through the beam 48, is the sliding pin 54, and a slotted link55, which turns on the pivot 55 secured to the beam 40, connects thispin 54 to a second parallel sliding pin 51 also mounted in the beam 48.Above the vertical pins 54 and 51 and slidably keyed on the shaft I inthe same manner as` sleeve 6, is the sleeve 58 which toward its righthand end carries the pointed cam 59 and which at its left hand endcarries the gear 68 provided with the single tooth 6I and has acylindrical portion 62 that again may be provided by a separate collar.Like the gear 8, the gear 60 is cylindrical except at and adjacent itstooth 8|, and its cylindrical diameter is equal to the diameter at 62.The upper end of the sliding pin 54 is so located that, when projected,it is engageable by the right hand side of the cam 58, as viewed in Fig.3, when the cam 59 is turned, and thereby can shift the sleeve 58 to theleft. Similarly the upper end of the sliding pin 51 is engageable, whenprojected, by the left hand side of the cam 59, and thus can shift thesleeve 58 to the right. The interconnecting link 55 permits only one ofthese pins to be projected at a time, of course.

On the left end of the shaft II, as viewed in Fig. l, is mounted a hub63 which is held on vthe shaft against axial movement outwardly and alsoagainst rotation on the shaft by the disk 64 and screw 65. On the hub63, in turn, and free to turn thereon, is carried a Geneva Wheel 86 sopositioned that the concave end of one of its teeth 61 will be engagedand locked by the collar 62 of gear 60 when the sleeve 58 is slid to theright on the shaft I, and also so positioned that it may be turned bythe single tooth 6I on the gear BIJ successively engaging the slotsbetween its teeth 61 when the sleeve 60 is slid to the left. The hub B3is held against axial movement inwardly by the disk 88 or the adjacentend wall 69 of the controller housing on which 68 is fastened by the pin1U. The wall 69 has a plate 1I to cover the Geneva wheel 66. The hub 63is provided with a sleeve 12 in which is a pin 13 having the head 14,and also a spring 16 positioned between the inner shoulder of the sleeve12 and the end 15 of the pin 13, and which therefore serves to hold thepin 13 projected into whichever of the series of holes 11 in the Genevawheel 68 it may be inserted. By this arrangement the hub 63, and therebythe shaft II which carries the change-directing pattern as4 laterappears, are locked to, but are angularly adjustablefor timing relativeto, the Geneva wheel or .gear 6E.

The controller mechanism includes a plurality yof sprockets 18 eachkeyed to the shaft II so that it will turn therewith, and held againstaxial movement at the right, as viewed in Fig. l, by the disk 19 andscrews 80 and at the left by the disk 8| and the screws 82. The disks 19and 8I may engage the end walls 32 and 69. Carried on each sprocket 18is a change-directing pattern consisting of an endless chain 83 havinghigh links 84 located at intervals appropriate to the changes theparticular chain is to bring about, as will be understood. Also includedin the controller mechanism is a plurality of feelers in the form oflevers 85 (Figs. 2 and '1), each of whichextends over a controller chain83 on a Sprocket 18 and is provided withv a nose 88 resting on its chain88, and each of Which'ispivoted on a bar 81 carried on the housing. Atthe free ends of the feeler levers 85; side panels 9I` ex tending fromthe ends 32 and'69 of the housing* 5 support a comb bar 92, and inthe slotsy 93"of" the comb bar 92 are supported bars or-levers 94' whichtransmit the calls on the feelers to dej vices which exercise thecontrol, not shown. The transmitting bars or levers 84 may beheld to thefeelers 85 by springs 95. f An eccentric 96, manually actuatable by thehandle 91, serves to when theseA raise the feelers from the patterns 83patterns are to be changed.

The operation of the controller described isf` as follows: The shaft I,drivencontinuously in a clockwise direction (Fig. 3) by gears 2 fromjjthe main shaft, completes one rotation each time n one of the six feedsofthe circular knitting machine it controls passes some point, say kthelocation of the call-transmitting bars 94. With each rotation the tooth9 on the gear 8 engages` a slot I4 between two teeth I5 on the Genevawheel I3 and advances this Geneva 'Wheel one step. While the Genevawheel I3 is being advanced about six steps, the pin 31 on the actu-5' Iator o r lever 3B rides inv a concentric part oi' the groove `I1 in theGeneva wheel I3 so that thisv pin is held away from the shaft II, andaccordingly the opposite end of the arm `38 holds i the pin 4I raised inthe path of the caniA 1.` As a result the sleeve 6 is held to the leftbythis pin, as viewed in Figs. 1 and 3, and the tooth 8 can turn onlyGeneva Wheel I3.

2I on the Geneva wheel 20 and holds that wheel locked against rotation(see Fig. 9). ,l

At the close of these step-by-step turns of the Geneva wheel I3, thatis, while the sixth turn is being completed, the pin 31 enters one ofthe eccentric portions I8 in the groove I1 and the arm- 38 is turnedbackward around its pivot 39. Consequently the free end of the arm 38 isdepressed and with it the pin 4I is lowered and removed from the path ofthe cam 1 while at the same time the vertical pin 44 is thrust into thepathof that cam. Thereby when the continued rotation of the sleeve 6brings the cam 1 against the pin 44, the sleeve 6, and with it the gear8, are` slid to the right sothat the collar I0 is slid tofl v the rightout of its locking engagement with'` the tooth- 2I on the Geneva wheel20 and thef et 22 is also fastened to the hub I2, this turn of theGeneva wheel 20 also turns the master control sprocket 22 one interval,and with it, of

course, advances the mastercontrol pattern chain 35 carried thereon.

During this time the sliding pin 51 at the opposite end lof thecontroller has held the sleeve 58 to the right, thereby locking thecontroller Geneva 66 against movement andtherewith the change-directingpatterns on the sprockets 18. Suppposing that the single turn of thesprocket 22 mentioned above does not bring one of the lhigh links 36 onthe master control pattern chain 35 under the roller 41, Fig. 2,everything continues as before until a later turn of the sprocket 22brings a high link under the roller, Figj.

Such an action calls the change-directing patf terns "to advance, 'andwheneverit'occurs the.'

The collar I84 then engages the concave end of one of the teethreetinss: atterneetth he #tiene the gear 6U is moved intoposition'toengagewith that .Geneva wheehSO .that e moment later Ge.:

des 'beato cui ete Sels@ ere-.secure ofQthe,.Geneva wheel; 6 alsoturnsthe l.contri).1h51?-f spr klets ,18 an. interval,...and advances.the,vdir ect ing. patterns. $3. .one step.A Wherf ever.thi'sl'brings.ahiglnlink 8 4 ,on acontroller,

cha

15v likewlseere loekedin restfposmoneet allttimes the. hat` ,63' and.'the ,hun sa... is ser.. ,tojtheshaft IJ, andgthe controllersprockd totheshaft. ll this turna chain Q3 to its feeler .'85, this feeler .israised by the ..1 in k (or is heldnpdf' already raised)' an d 'withtitthe corresponding bar, 9A.. is, actuated1 to,, l

sanjm'ake e change. et rSeme .etmeyamfchaneea oro'therj element .oi the`-knitting machine.

Durirl ,the ntooth .s 4nitriet bpm .G eneya wilgen la amigas;

endntethenext eeneentrie pertionef the groove..

it refises the Sliding pin `4l. .and l,wtlndrtWe. the 1. 'sliding pin4L) Since the pinv 4I1is 'now in the pathofthecamJ; sleeve 6; sconoA ismoved to the 3,85. .baelil aroundi the, pivot left tQQelidetneeearttetnnut offenen 0f the.

Genevawheel; gandrleee. `the cellar l0 again intoengagexnent kwiththeconcave end of a tooth 2l o n Geneva 2 lljto again lock that Wheel aginstrotf tion. A s a result, on the eighth and th ext f ew.t1 1`rn s,,tootl f1. 9 .turns only. theGe-4 nev wheel I .3f. However, Ge nevawhee1 20 and therewith `the master. eeifitrller` pattern .35 are y et.rest'- On the other hand.; if there.

ing. ereedvaneed Ysi'xftirnes. .during the periodv sothat eeaaih ter'contro rnecl 1 a nis1r i, theA master.. control pattionsbetween thesegears cause this `pattern to ed innositpndunna .this leighth andA the.

yB1 and ftheir changedirecting patterns noedrelatiyelyslowly. andaccord,- ing1'y"'may be rather short. Further, .the .re1a

turnaend. .neehangeismade in themthe slidingpins 5 4 and` 51T duringthisA If lthereis af low linl; of the insister- 4 `tter.r\...f5..bekamthe follower .41, the` i f1 nk'of enamegjoemw fouower 41 due fperied. l.the cheneerdirectine patterns B3 changes ,canbe made oromittedgat each feedinf 55:

."becausefof'theuse ofa succession of W0 Grenet/a.movements)` at themns; f

advan ,e in ,a time relation to complete, cycles lciw theofdued machinenamely. in ,the present instancefgdvance once for each conxplete cycle.Aire acll v advance this control pattern either di-' rects thechangedirecting patterns remain et reet'tlurine thenextjeomplete-eyc1e-.o tnerne-r A chine it entrls, er.. @drente dunne.that @vele so thatfas manyV o i the operationscomposing .the

. from -`.each other by deliberate manipnlation 'theedjnstment devicesMaand 15, the Genevas ..eersiirgeelitesy Dette ..1 and ineeeerdeneeiwiby .theI.nienmiiltttierl .ef .the adjustment. permi; 'tinel-fsievees. 34and. 75,...S,o..thatthe controlle met zPrQPellY adiretdt is.:Substantially .Pf-0 against -eidentaLnStimine-c,i Thuszit .willtbeennerent that except as. parts-f may .be "unleeked l3and. ,20 farelocked'at restatall times except while. beinatnrnedf. by f the, Singletoothy t geen 21141 therewith .the .masten contre! pattern-.35 is lockedet reet, endj the .change-directing, patterne.

eXeeptwhenbengadvanced by-thetsineletoothr l' gear. and even while beingadvancedvallthese parte. areloekedmp .the prmarvzdrtvine theft... fdirectlyr or. indiretly.

It will be understood. of` coursethatminve tionisnotlimitled -to thedetailspf construction and operation illustrated in the ,drawingyand,A-f describedsabove except as appears, hereaftenin the claims. It is tobe nnders'tod also that 1 do notintend the claims to be limitedWhollytoy the particular elements specifically mentioned -in them,buttoj includeequivalents o f. thosetelexnents t as WclL j I claim: [1.lIn a controller, at least onechangedirecte ing patterma master.control-mechanism having.-

a patternto directtheadvances-of s adchange,

directing pattern,A a' powcrdevice vto advancel said;V j. master`control pattern and said change-directingl pattern. constantly.ntermeshedtoothed gearing;

between said power devioeandsaid maste r con .fA trol pattern thrmgh`which ythe .latter` Vis drivexn..v fromv thee former; and constantlyintermeshed,.VA

toothedgearin'g betweensaid power device.. and.` said. .change-directingnatternthreueliwheh the. changedirecting pattern is,v driven byfthepowerdevice] [2. Ina controller, at least @echange-.directa t ing pattern, amaster` controlmechanism having directing pattern, a shafttobe vdrivenina. fXed j timerelationt with the appnratussiibject to the',controller, a Geneva type of movement between said master controlpattern, andv saidgshz 1 f t .v

through which the master `control pattern ad; vanced and is locked inposition during the intervalsbetween advances Aby lsaid shaft, anc .co nA stantly ntermeshed toothed .gearing between saidj shaft andsaidchangedirecting pattern through ,..zj

which the 4 change-directing pattern is advanced` when called` by themaster control pattern] [3. In acontroller, at least one changedirect. AingI pattern, a. mastercontrol mechanism l'iavingY a pattcrnto directtheadvances of saidchange:

directingpattern, a shaft to be driven in a fixed time relation withthegapparatus subject yto the controller, a, Geneva type of movementbetween said, master control patternY and saidfshaft-x;

throughjvhich the master control patternfis advancedand is locked inposition during the intervals betvveenadvances by s aidjshait, aGenevatype movement `between saidehaneefdireetne..

control patternjthroughwhich the master ,control Patternatte-tesmeetic-Geneva movement-,f .te @L cause the change-directingpattern to advance] [4. The subject matter of claim 2, characterized bythe fact that at least two Geneva type movements are interposed betweensaid master control pattern and said shaft, one being coupled to themovement ahead of it for actuation thereby so as to advance atintervals, and the last being coupled to said master control pattern toadvance the latten] 5. In a controller, at least one change-directingpattern, a master control pattern to direct the advance of saidchange-directing pattern, a shaft to be driven in a fixed time relationwith the apparatus subject to the controller, a Geneva type of movementdriven by said shaft, a second Geneva type of movement the driven memberof which is attached to said master control pattern and the drivingmember of which includes a sleeve rotatable by but slidable on saidshaft between locking and driving position, and an actuator controlledby the first mentioned Geneva movement to slide said sleeve along theshaft.

6. In a controller, at least one change-directing pattern, a mastercontrol mechanism having a pattern to direct the advance of saidchangedirecting pattern, a shaft to be driven in a fired time relationwith the apparatus subject to the controller to advance said mastercontrol pattern and said change-directing pattern, constantlyintermeshed toothed gearing between said master control pattern and saidshaft through which said master control pattern is driven, andconstantly intermeshed toothed gearing, at least one element of which isslidable on said shaft, through which said change-directing pattern isdriven by said shaft.

7. The subject matter of claim 6, characterized by the fact that theconstantly intermeshed gearing between said master control pattern andsaid shaft, is a Geneva type gear.

8. The subject matter of claim 7, characterized by the fact that theelement which is slidable on said shaft is a sleeve which is slidable toand from positions where, alternately, it advances a change-directingpattern and locks said pattern in position, and an actuator is provided,controlled by said master control pattern, to control such sliding ofthe sleeve.

9. The subject matter of claim 8, characterized by the fact that thegearing through which the change-directing pattern is driven is a Genevatime movement.

10. The subject matter of claim 6, characterized by the fact that theconstantly intermeshed gearing through which the change-directingpattern is driven, is a Geneva type gear, the toothed gear which drivesthe Geneva wheel thereof is the element which is slidably mounted onsaid shaft, and an actuator, controlled by the master pattern, isprovided to control the position of the toothed gear along the shaft.

11. In a controller, at least one change-directing pattern, amaster-control mechanism having a pattern to direct the advances of saidchangedirecting pattern, a shaft to be driven in a fixed time relationwith the apparatus subject to the controller, at least two Geneva typemovements interposed between said master control pattern and said shaftthrough which the master control pattern is advanced and locked inposition during intervals between advances by said shaft, one of saidGeneva type movements being coupled to the movement ahead of it foractuation thereby so as to advance at intervals, and the last beingcoupled to said master control pattern to advance the latter, andconstantly intermeshed toothed gearing between said shaft and saidchangedirecting pattern through which the changedirecting pattern isadvanced when called by the master control pattern. f

12. The subject matter of claim 11, characterized by the fact that atleast one element of said toothed gearing includes a sleeve rotatable bybut slidable on said shaft through which said change-directing patternis driven by said shaft.

13. The subject matter of claim 12, characterized by the fact that saidtoothed gearing is a Geneva type movement, and an actuator is providedcontrolled by the mastey control pattern to slide said sleeve of theGeneva type movement.

CHARLES F. MILLER.

REFERENCES CITED The following references are of record in the file ofthis patent or the original patent:

